Terminal-socket.



PATENTED JUNE SO, 1903.

C. LEIGHTENSGHLAG.

TERMINAL SOCKET.

APPLICATION FILED MAR. 10, 1900.

NO MODELv UNITED STATES Patented June 30, 1903,

PATENT OFFICE.

HALSKE ELECTRIC COMPANY CORPORATION OF ILLINOIS.

OF AMERICA, OF CHICAGO, ILLINOIS, A

TERMINAL-SOCKET.

SPECIFICATION forming part of Letters Patent No. 732,196, dated June 30,1903. Application filed March 10, 1900. Serial No- .209. (N0 model.)

To all whom it may concern.-

Be it known that I, CARL LEICHTENSCHLAG, a subject of the Emperor ofGermany, residing at Berlin, Germany, have invented a certain new anduseful Improvement in Terminal-Sockets, (Case No. 348,) of which thefollowing is a full, clear, concise, and exact description, referencebeing had to the accompanying drawings, forming a part of thisspecification.

My invention relates to terminal-sockets, and more particularly to thatclass of terminal -sockets in which the external portion thereof servesboth as a contact portion and as a supporting means for theterminal-plug to be inserted therein, and has for its object theprovision of an improved and simplified construction for terminalsocketsof this class.

In three-wire systems and in systems in which one conductor of thesystem is grounded it is frequently unnecessary to have bothcontact-terminals of the terminal-socket inclosed and insulated from thesurrounding external portions of the socket. A simplified, durable, andefficient construction is hereby obtained, certain portions which areordinarily employed in the terminal-sockets being dispensed with.

It is the primeobject of my invention to provide improved means forsecurely uniting the contact-terminals of the terminal-socket to aninsulating-base.

Generally speaking, my invention comprises in its preferred embodiment afiat rounded insulating-base, constructed, preferably, of insulatingmaterial,which is provided with two radial recesses, through whichextensions provided upon the external contact portion are passed, thesaid extensions being bent about portions of the said base upon theopposite sides thereof, whereby a secure and readily-made attachmentbetween the said external contact and the insulating-base is secured. Asecond spring-acting contact is placed in the central portion of theinsn1at-' ing-base and secured thereto preferably by means of a screw.Suitable binding-screws are provided both upon the externalpreferablyscrew-threaded contact portion and upon aconductingangle-piece in electrical communication with the central contactportion.

I will describe my invention more in detail by reference to theaccompanying drawings, illustrating the preferred embodiment thereof, inwhich Figure 1 is a cross-sectional view of asocket built in accordancewith my invention, a lamp being shown in place and circuit connectionsbeing indicated diagrammatically.

Fig. 2 is a bottom view of the said socket. Fig. 3 is a cross-sectionalview on line a a of Fig. 2. Fig. 4 is a top view of the same, the lampbeing removed.

Like characters of reference indicate similar parts throughout theviews.

I have shown a source of current 1 as supplying current to the circuit2, my improved socket 3 being shown as included in said circuit,furnishing current therethrough to the lamp 4.

In the preferred embodiment of my invention I construct aterminal-socket as shown, the same being provided with a flat roundedinsulating-piece 5, provided with two radial longitudinal slots 6 6 atopposite points thereof. I also preferably provide recesses 7 7 in thelower portion of the insulating-piece 5 in line with the slots 6 6. Anexternal preferably screW-threaded con tact-terminal 8,which secures alamp, fuse-plug, or some other form of translating device in place, ispreferably provided with two longitudinally-extending arms 9 9, the saidarms being preferably of the same width as the slots 6 and the recesses7. The arms are passed through the slots 6 and preferably bent aroundthe lower and rounded corners of the insulating-base 5. A binding-screw10 is preferably fastened to a sleeve 11, the said sleeve being unitedto the external contact 8. A second contact 12 is preferably secured atthe central portion of the insulating-base by means of a screw 13, thesaid contact being in electrical commnnication with an easily-accessiblebindingscrew let through the agency of an angle-piece 15. This secondcontact. is preferably of spring-like construction, so that a firmcontact between the lamp or translating device and the said contact maybe maintained. Re-

cesses 16 16 are preferably provided, so that wires may be readilypassed to the bindingscrews 10 14.

As will be seen, a terminal-socket is provided which is constructed ofvery few parts and whose parts are firmly and rigidly united together.

I have herein shown and particularly described an embodiment of myinvention; but I do not wish to limit myself to the precise constructionand arrangement shown, as modifications thereof may readily be made bythose skilled in the art without departing from the spirit thereof, and

I therefore claim as new, and desire to secure by Letters Patent, thefollowing:

1. In a terminal-socket, the combination with an insulating-base,of aterminal-contact provided with longitudinally-extending arms, slotsprovided in said base through which said arms are passed, and recessesprovided in said base wherein said arms project, thereby securing a firmengagement between the said base and the said terminal-contact,substantially as described.

2. In a terminal-socket, the combination with an insulating-base, ofareceptacle adapt ed to have a plug'inserted therein,longitudinally-extending arms provided upon said receptacle, andrecesses provided in the said base wherein said arms project, therebysecuring a firm engagement between the said base and the saidreceptacle, substantially as described.

3. In a terminal-socket, the combination with an insulating-base,-of areceptacle for receiving a plug inserted therein,longitudinally-extending arms provided upon said receptacle, slotsprovided in said base through v which said arms are passed, and recessesprovided in said base wherein said arms are adapted to project, therebysecuring a firm engagement between said base and said receptacle,substantially as described.

4. In a terminal-socket, the combination with an insulating-base,of acircular terminalcontact provided with longitudinally-extending arms,slots provided in said base through which said arms are passed, recessesprovided in said base wherein said arms project, thereby securing a firmengagement between the said base and the said terminal-contact, and abinding-post provided upon the said terminal-contact, substantially asdescribed.

5. In a terminal-socket, the combination with an insulating-base, of areceptacle adapted to have a plug inserted therein to convey currentthereto, longitudinally extending arms provided upon said receptacle,recesses provided in the said base wherein said arms project, therebysecuring a firm engagement between the said base and the saidreceptacle, and a binding-post provided upon said receptacle,substantially as described.

6. In a terminalesocket, the combination with an insu1ating-base,ofacircular terminalcontact provided with longitudinally-extending arms,slots provided in said base through which said arms are passed, recessesprovided in said base wherein said arms project, thereby securing a firmengagement between the said base and the said terminal-contact, acentral contact provided upon said base, an angle-piece 15, and abinding-post therefor, substantially as described.

7. In a terminal-socket, the combination with an insulating-base, of areceptacle adapted to have a plug inserted therein to convey currentthereto, longitudinally extending arms provided upon said receptacle,recesses provided in the said base wherein said arms project, therebysecuring a firm engagement between the said base and the saidreceptacle, a central contact provided upon said base, an angle-piece15," and a binding-post therefor, substantially as described.

8. The combination with an insulating-base 5, of an externalscrew-threaded contact 8, arms 9, 9 provided upon said external contact,slots 6, 6 through which said arms are passed, recesses 7, 7 whereinsaid arms project, and a central contact 12 secured upon said. base,substantially as described.

9. The combination with an insulating-base 5, of an vexternalscrew-threaded contact 8, arms 9, 9 provided upon said external contact,slots 6, 6 through which said arms are passed, recesses 7, 7 whereinsaid arms project, a central contact 12 secured upon said base, anangle-piece 15, and a binding-post 14, substantially as described.

10. The combination with an insulatinghase 5, of an externalscrew-threaded contact 8, arms 9, 9 provided upon said external contact, slots 6, 6 through which said arms are passed, recesses 7, 7wherein said arms project, a central contact 12, and a screw 13 forsecuring the same to the said base, substantially as described. 7

In witness whereof I hereunto subscribe my name this 14th day ofFebruary, A. D. 1900.

CARL LEIGHTENSOHLAG.

Witnesses:

WOLDEMAR HAUPT, WILLIAM MAYNER.

